Harrow or drag tooth



Sept. 25, 1923. 1,459,115.

P. SIMONS HARROW OR DRAG TOOTH Filed Aug. 25 1922 [N R. ,1 bun/ans VENTO ATTORNEY.

Patented Sept. 25, 1923.

usursn stares PATENT m PHILIP sir/ions, or rEwA'Mo, MICHIGAN,

HARE-W ORDRAG troorr rr. 1

Application filed August 23, 1922. Serial No. 523,877.

end of each tooth with a lateral earth engaging cutting offset, to materially increase the width of the cut or furrow, and arranging the teeth and the oflsets in staggered relation, so that all portions of the furrow are uniformly acted on and no ridges or other uneven portions produced. 1

Another object of the invention is to provide a device of this character having means whereby the tooth will yield to abnormal strains and thus prevent breakage of the parts.

Another object of the invention is to provide a device. of this character in which means are provided for rigidly connecting the offset to the body of a resilient tooth, to reinforce and stiffen the union between the tooth and the offset.

With these and other objects in view, the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claim, and in the drawings illustrative of the preferred embodiment of the invention Figure 1 is a side elevationof one of the.

improved harro-w teeth attached to a con ventional tooth bar, the latter being. in transverse section,

Fig. 2 is a front elevation of one of the tions, an upper section and a lower sec-.

tion 10 the two sections being coupled by a single bolt 418. The portion 10 of the tooth structure is formed with means such as a shortly turned terminal 11 adapted to be attached by a bolt 12 to the tooth bar 13.

At its free end the portion 10 is extended laterally as at'14,.the extension being preferably inclined downwardly and rearwardly away from the body of the tooth, as shown.

Attached to the under face of the extension 14 is a reinforcing member 15, the lat ter extended at one end as at 16-.to engage the body 10 at its juncture with the exten sion 1-4:, to support the extension and stiffen and strengthen the union between the parts.

The reinforcing member 15-16 is rigidly secured in position by rivets 17 or the, like.

The extension 14 is directed at aslight angle both downwardly and rearwardly away from the portion 10 of the tooth, so that it draws through the earth with a shearing action, thereby materially reducmg the friction and consequentlydecreas-' ing the power required to draw the harrow through the earth.

The improved teeth are attachedto the bars 13 in staggered relation, as illustrated in Fig. 3, so that the earth engaging members engage every portion of the earth or furrow and uniformly operate thereon, and obviate the formation of ridges or untreated lands. 1i 5 The bolts 18 will be of suflicient strength to hold the portions 10 an dlO against normal strains while in operation, but'will yield if the earth en a es an abnormal resistance.

such as a root, stone, or the like and avoid. breaking any of the parts.

Any number'of the bars 18 may be emthus ployed and any number of the improved teeth attached to each bar, as required.

By this simple construction all of the marked advantages of the spring or resilient harrow or drag tooth are retained and in addition an effectual earth engaging means account of its yieldable qualities'possesses certain marked advantages in working certain kinds of ground, and which tend to pulverize the soil much better'than a solid tooth.

In the present device all of the advantages of the spring tooth are retained and in addition the very marked advantage of the inclined rigid ,ofi'set cutting blades operates slightly beneath the surface of the soil, and by overlapping obviates the formation of ridges or lands.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specification, but it Will be un-' derstood that modifications Within the scope of the claimed invention may be made in the construction withoutdeparting from the principle of the invention or sacrificing any of its advantages. 7 v

bear against and reinforce the tooth mem- 20 her at its juncture with the offset.

In testimony whereof, I aflix my signature hereto. r PHILIP SIB/IONS.- 

